Lower abdominal pain in the elderly is generally considered to be due to its functional factors, intestinal pathology, urinary and reproductive system diseases and other reasons. 1. Functional factors: autonomic dysfunction may cause functional spasmodic contraction of the small intestine, which may be manifested as lower abdominal pain. 2. Intestinal lesions: colitis, proctitis, colonic tumors, rectal tumors and other digestive disorders may trigger symptoms of lower abdominal pain. 3. Diseases of genitourinary system: urinary tract infection, urinary stones, men may trigger lower abdominal pain if they suffer from prostate cancer, prostatitis, women suffer from uterine cancer, uterine fibroids, ovarian cancer, fallopian tube tumors and other diseases. When the elderly have lower abdominal pain, they should go to regular hospitals for detailed examination in time to clarify the causes of lower abdominal pain, and then treat them according to the causes.